20079545 has 12 divisors (see below), whose sum is σ = 24707820. Its totient is φ = 15665280.

The previous prime is 20079511. The next prime is 20079547. The reversal of 20079545 is 54597002.

It can be written as a sum of positive squares in 6 ways, for example, as 9916201 + 10163344 = 3149^2 + 3188^2 .

It is not a de Polignac number, because 20079545 - 2¹⁰ = 20078521 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20079547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7211 + ... + 9599.

It is an arithmetic number, because the mean of its divisors is an integer number (2058985).

Almost surely, 2^20079545 is an apocalyptic number.

It is an amenable number.

20079545 is a deficient number, since it is larger than the sum of its proper divisors (4628275).

20079545 is an equidigital number, since it uses as much as digits as its factorization.

20079545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2476 (or 2435 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 20079545 is about 4481.0205310844. The cubic root of 20079545 is about 271.8011495368.

The spelling of 20079545 in words is "twenty million, seventy-nine thousand, five hundred forty-five".